ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,183, issued on Feb. 10, was assigned to Becton Dickinson and Co. (Franklin Lakes, N.J.).
"Ultrasonic echogenic device" was invented by Qingqing Fan (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ultrasonic echogenic device (100) includes a base layer (1), an echogenic layer (2) covering the base layer (1) and adhered to the base layer (1) at least by a separate lower adhesive (4), an outer layer (3) covering the echogenic layer (2) and adhered to the echogenic layer (2) at least by a separate upper adhesive (5), wherein the ultrasonic echogenic device (100) is configured such that a rough interface is provided at a position where the ec...